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\( MathJax \)

$H_2O x^2$ are inline math

When $a \ne 0$, there are two solutions to \(ax^2 + bx + c = 0\) and they are $$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$

import std.stdio;

void main()
{
    writeln("hello world");
}

inline